cry over spilt milk (British English) (US English cry over spilled milk)
to waste time worrying about something that has happened that you cannot do anything about
As the saying goes—it's no use crying over spilt milk.it's no use crying over spilt milk
spill the beans
(informal) to tell somebody something that should be kept secret or private
spill (somebody’s) blood
(formal or literary) to kill or wound somebody
Nothing can justify spilling innocent blood.
spill your guts (to somebody)
(North American English, informal) to tell somebody everything you know or feel about something, because you are upset
He has spilled his guts in his new autobiography.